Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

A. McCollam; S. Wenderich; M.K. Kruize; V.K. Guduru; H.J.A. Molegraaf; M. Huijben; G. Koster; D.H.A. Blank; G. Rijnders; A. Brinkman; H. Hilgenkamp; U. Zeitler; J.C. Maan

doi:10.1063/1.4863786

Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

A. McCollam, S. Wenderich, M.K. Kruize, V.K. Guduru, H.J.A. Molegraaf, M. Huijben, G. Koster, D.H.A. Blank, G. Rijnders, A. Brinkman, H. Hilgenkamp, U. Zeitler, J.C. Maan

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Abstract

We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9m e and 2m e , quantum mobilities of order 2000 cm2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.

Original language	English
Article number	022102
Number of pages	7
Journal	APL materials
Volume	2
Issue number	2
DOIs	https://doi.org/10.1063/1.4863786
Publication status	Published - 2014

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McCollam, A., Wenderich, S., Kruize, M. K., Guduru, V. K., Molegraaf, H. J. A., Huijben, M., Koster, G., Blank, D. H. A., Rijnders, G., Brinkman, A., Hilgenkamp, H., Zeitler, U., & Maan, J. C. (2014). Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface. APL materials, 2(2), Article 022102. https://doi.org/10.1063/1.4863786

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title = "Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface",

abstract = "We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9m e and 2m e , quantum mobilities of order 2000 cm2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.",

author = "A. McCollam and S. Wenderich and M.K. Kruize and V.K. Guduru and H.J.A. Molegraaf and M. Huijben and G. Koster and D.H.A. Blank and G. Rijnders and A. Brinkman and H. Hilgenkamp and U. Zeitler and J.C. Maan",

year = "2014",

doi = "10.1063/1.4863786",

language = "English",

volume = "2",

journal = "APL materials",

issn = "2166-532X",

publisher = "American Institute of Physics",

number = "2",

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TY - JOUR

T1 - Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

AU - McCollam, A.

AU - Wenderich, S.

AU - Kruize, M.K.

AU - Guduru, V.K.

AU - Molegraaf, H.J.A.

AU - Huijben, M.

AU - Koster, G.

AU - Blank, D.H.A.

AU - Rijnders, G.

AU - Brinkman, A.

AU - Hilgenkamp, H.

AU - Zeitler, U.

AU - Maan, J.C.

PY - 2014

Y1 - 2014

N2 - We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9m e and 2m e , quantum mobilities of order 2000 cm2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.

AB - We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9m e and 2m e , quantum mobilities of order 2000 cm2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.

U2 - 10.1063/1.4863786

DO - 10.1063/1.4863786

M3 - Article

SN - 2166-532X

VL - 2

JO - APL materials

JF - APL materials

IS - 2

M1 - 022102

ER -

Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface

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